Merge pull request #11055 from JuliaLang/jcb/fixmethodswith

adapt `methodswith` to new Tuple types, fixes #11052

Author: jakebolewski

base/interactiveutil.jl

@@ -287,12 +287,12 @@ function methodswith(t::Type, f::Function, showparents::Bool=false, meths = Meth
         return meths
     end
     d = f.env.defs
-    while !is(d,())
+    while d != nothing
         if any(x -> (type_close_enough(x, t) ||
                      (showparents ? (t <: x && (!isa(x,TypeVar) || x.ub != Any)) :
                       (isa(x,TypeVar) && x.ub != Any && t == x.ub)) &&
                      x != Any && x != ANY),
-               d.sig)
+               d.sig.parameters)
             push!(meths, d)
         end
         d = d.next

test/misc.jl

@@ -112,3 +112,8 @@ end
 @test gc_disable() == false
 @test gc_enable() == false
 @test gc_enable()
+
+# test methodswith
+immutable NoMethodHasThisType end
+@test isempty(methodswith(NoMethodHasThisType))
+@test !isempty(methodswith(Int))